lol all you guys misread his post. He is asking for help AFTER beating the spider boss. he's having issues with the golden skeleton in 4-1, not the spider boss.
Jack Videogames
i would suggest you continue on to the next boss. there is a shortcut you can take in 2-2 that lets you fight the boss without really fighting any other enemies. get the flame resistance ring and the purple shield from the hill with the two dragons in 1-1 to give yourself good protection against the 2-2 boss.
or you can do the 4-1 boss by using the adjudicator skip and skip the golden skeletons altogether. look this up. lets you skip the entire level.
upgrade your falchion the best you can by killing the two lizards in 4-1. 4-1 boss is easy so go and get the lizards again since the respawn after you kill each boss in that world. should have enough to get falchion to +2 and then do 2-2 and kill every enemy in 2-2 in just one to two hits. the boss in 2-2 is also weak to magic damage so the falchion is going to be much than whatever strength weapons you have. 4-1 boss soul lets you make one of the best strength weapons so do that as well but falchion is going to be better against the 2-2 boss.